#66D6ED#66D6ED

#66D6ED is a light, moderate cyan. Relative luminance 0.570; OKLCH L 81.9% C 0.107 H 213.1°. Best body text is #000000 at 12.41:1 contrast (WCAG AA passes).

Color values

HEX	#66D6ED
RGB	rgb(102, 214, 237)
HSL	hsl(190, 79%, 66%)
HSV	hsv(190, 57%, 93%)
CMYK	cmyk(57%, 9.7%, 0%, 7.1%)
CIE-LAB	lab(80.20, -25.50, -20.97)
CIE-LCH	lch(80.20, 33.01, 219.44°)
OKLab	oklab(81.93% -0.0893 -0.0581)
OKLCH	oklch(81.93% 0.107 213.1)
XYZ	xyz(44.8060, 57.0280, 88.7506)
Luminance	0.5703 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D6ED #ED7D66

analogous

#66EDC1 #66D6ED #6693ED

triadic

#66D6ED #ED66D6 #D6ED66

tetradic

#66D6ED #C166ED #ED7D66 #93ED66

square

#66D6ED #C166ED #ED7D66 #93ED66

split-complementary

#66D6ED #ED6693 #EDC166

monochromatic

#17A5C2 #2FC7E7 #66D6ED #9DE5F3 #D4F3FA

Accessibility & contrast

On white

1.69

#66D6ED on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.41

#66D6ED on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D6ED

12.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D6ED	#FFFFFF	#000000	##000000
##66D6ED	1.00	1.69	12.41	12.41
#FFFFFF	1.69	1.00	21.00	21.00
#000000	12.41	21.00	1.00	1.00
##000000	12.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C4D0EE

Deuteranopia (green-blind)

#B0C0ED

Tritanopia (blue-blind)

#00DFDD

Achromatopsia (no color)

#C7C7C7

Design tokens & code

CSS

--color: #66d6ed;
/* rgb */ color: rgb(102, 214, 237);
/* oklch */ color: oklch(81.9% 0.107 213.1);

Tailwind

colors: {
  custom: {
    50: '#9de3f2',
    500: '#66d6ed',
    950: '#000000',
  },
}

SCSS

$custom: #66d6ed;
$custom-light: #9de3f2;
$custom-dark: #000000;

JSON

{
  "hex": "#66d6ed",
  "rgb": {
    "r": 102,
    "g": 214,
    "b": 237
  },
  "hsl": {
    "h": 190.222,
    "s": 78.947,
    "l": 66.471
  },
  "oklch": {
    "l": 0.8193,
    "c": 0.10652,
    "h": 213.1
  },
  "luminance": 0.57032
}

Semantic roles & 50–950 ramp

primary

#66D6ED

secondary

#C04F37

accent

#2E0ADB

background

#FCFEFF

surface

#F6FCFE

border

#D0D5D6

text

#0F1517

muted

#808485

Preview Lab

Preview with #66D6ED

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →